Everything we know about Supernatural season 15 episode 13.
The official press release.
 
“Destiny’s Child” — (8:00-9:00 p.m. ET) (TV-14, DLV) (HDTV)
DANNEEL ACKLES AND GENEVIEVE PADALECKI RETURN AS JO AND RUBY – A search for the one thing that may give the Winchesters an edge against God leads Sam (Jared Padalecki) and Dean (Jensen Ackles) to Jo’s (guest star Danneel Ackles) door and to a secret that may have died with Ruby (guest star Genevieve Padalecki). Meanwhile, Castiel (Misha Collins) asks Jack (Alexander Calvert) to do the unthinkable to help the brothers in their quest. Amyn Kaderali directed the episode written by Brad Buckner & Eugenie Ross-Leming (#1513). Original airdate 3/23/2020.

Source:

CW

 
 The original trailer
 
 
 
 
 

 
 The promotional pictures
 
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For more spoilers, rumors and BTS pictures see he discussion thread of episode 13.
 
 This looks like a packed episode. We have Sam and Dean meeting their own dopplegangers. We have the return of Ruby and Anael/Sister Jo. What secret died with Ruby? What unthinkable thing does Cas encourage Jack to do? Give us your thoughts in the comments or in the discussion thread of episode 13.

AdmirorGallery 5.2.0, author/s Vasiljevski & Kekeljevic.